diu.c 4.4 KB

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  1. /*
  2. * Copyright 2008 Freescale Semiconductor, Inc.
  3. * York Sun <yorksun@freescale.com>
  4. *
  5. * FSL DIU Framebuffer driver
  6. *
  7. * See file CREDITS for list of people who contributed to this
  8. * project.
  9. *
  10. * This program is free software; you can redistribute it and/or
  11. * modify it under the terms of the GNU General Public License as
  12. * published by the Free Software Foundation; either version 2 of
  13. * the License, or (at your option) any later version.
  14. *
  15. * This program is distributed in the hope that it will be useful,
  16. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  18. * GNU General Public License for more details.
  19. *
  20. * You should have received a copy of the GNU General Public License
  21. * along with this program; if not, write to the Free Software
  22. * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  23. * MA 02111-1307 USA
  24. */
  25. #include <common.h>
  26. #include <command.h>
  27. #include <asm/io.h>
  28. #include "../../../../board/freescale/common/fsl_diu_fb.h"
  29. #if defined(CONFIG_VIDEO) || defined(CONFIG_CFB_CONSOLE)
  30. #include <stdio_dev.h>
  31. #include <video_fb.h>
  32. #endif
  33. #ifdef CONFIG_FSL_DIU_LOGO_BMP
  34. extern unsigned int FSL_Logo_BMP[];
  35. #else
  36. #define FSL_Logo_BMP NULL
  37. #endif
  38. static int xres, yres;
  39. void diu_set_pixel_clock(unsigned int pixclock)
  40. {
  41. volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR;
  42. volatile clk512x_t *clk = &immap->clk;
  43. volatile unsigned int *clkdvdr = &clk->scfr[0];
  44. unsigned long speed_ccb, temp, pixval;
  45. speed_ccb = get_bus_freq(0) * 4;
  46. temp = 1000000000/pixclock;
  47. temp *= 1000;
  48. pixval = speed_ccb / temp;
  49. debug("DIU pixval = %lu\n", pixval);
  50. /* Modify PXCLK in GUTS CLKDVDR */
  51. debug("DIU: Current value of CLKDVDR = 0x%08x\n", in_be32(clkdvdr));
  52. temp = in_be32(clkdvdr) & 0xFFFFFF00;
  53. out_be32(clkdvdr, temp | (pixval & 0xFF));
  54. debug("DIU: Modified value of CLKDVDR = 0x%08x\n", in_be32(clkdvdr));
  55. }
  56. char *valid_bmp(char *addr)
  57. {
  58. unsigned long h_addr;
  59. h_addr = simple_strtoul(addr, NULL, 16);
  60. if (h_addr < CONFIG_SYS_FLASH_BASE ||
  61. h_addr >= (CONFIG_SYS_FLASH_BASE + CONFIG_SYS_FLASH_SIZE - 1)) {
  62. printf("bmp addr %lx is not a valid flash address\n", h_addr);
  63. return 0;
  64. } else if ((*(char *)(h_addr) != 'B') || (*(char *)(h_addr+1) != 'M')) {
  65. printf("bmp addr is not a bmp\n");
  66. return 0;
  67. } else
  68. return (char *)h_addr;
  69. }
  70. int mpc5121_diu_init(void)
  71. {
  72. unsigned int pixel_format;
  73. char *bmp = NULL;
  74. char *bmp_env;
  75. xres = 1024;
  76. yres = 768;
  77. pixel_format = 0x88883316;
  78. debug("mpc5121_diu_init\n");
  79. bmp_env = getenv("diu_bmp_addr");
  80. if (bmp_env) {
  81. bmp = valid_bmp(bmp_env);
  82. }
  83. if (!bmp)
  84. bmp = (char *)FSL_Logo_BMP;
  85. return fsl_diu_init(xres, pixel_format, 0, (unsigned char *)bmp);
  86. }
  87. int mpc5121diu_init_show_bmp(cmd_tbl_t *cmdtp,
  88. int flag, int argc, char *argv[])
  89. {
  90. unsigned int addr;
  91. if (argc < 2) {
  92. cmd_usage(cmdtp);
  93. return 1;
  94. }
  95. if (!strncmp(argv[1], "init", 4)) {
  96. #if defined(CONFIG_VIDEO) || defined(CONFIG_CFB_CONSOLE)
  97. fsl_diu_clear_screen();
  98. drv_video_init();
  99. #else
  100. return mpc5121_diu_init();
  101. #endif
  102. } else {
  103. addr = simple_strtoul(argv[1], NULL, 16);
  104. fsl_diu_clear_screen();
  105. fsl_diu_display_bmp((unsigned char *)addr, 0, 0, 0);
  106. }
  107. return 0;
  108. }
  109. U_BOOT_CMD(
  110. diufb, CONFIG_SYS_MAXARGS, 1, mpc5121diu_init_show_bmp,
  111. "Init or Display BMP file",
  112. "init\n - initialize DIU\n"
  113. "addr\n - display bmp at address 'addr'"
  114. );
  115. #if defined(CONFIG_VIDEO) || defined(CONFIG_CFB_CONSOLE)
  116. /*
  117. * The Graphic Device
  118. */
  119. GraphicDevice ctfb;
  120. void *video_hw_init(void)
  121. {
  122. GraphicDevice *pGD = (GraphicDevice *) &ctfb;
  123. struct fb_info *info;
  124. if (mpc5121_diu_init() < 0)
  125. return NULL;
  126. /* fill in Graphic device struct */
  127. sprintf(pGD->modeIdent, "%dx%dx%d %dkHz %dHz",
  128. xres, yres, 32, 64, 60);
  129. pGD->frameAdrs = (unsigned int)fsl_fb_open(&info);
  130. pGD->winSizeX = xres;
  131. pGD->winSizeY = yres - info->logo_height;
  132. pGD->plnSizeX = pGD->winSizeX;
  133. pGD->plnSizeY = pGD->winSizeY;
  134. pGD->gdfBytesPP = 4;
  135. pGD->gdfIndex = GDF_32BIT_X888RGB;
  136. pGD->isaBase = 0;
  137. pGD->pciBase = 0;
  138. pGD->memSize = info->screen_size - info->logo_size;
  139. /* Cursor Start Address */
  140. pGD->dprBase = 0;
  141. pGD->vprBase = 0;
  142. pGD->cprBase = 0;
  143. return (void *)pGD;
  144. }
  145. /**
  146. * Set the LUT
  147. *
  148. * @index: color number
  149. * @r: red
  150. * @b: blue
  151. * @g: green
  152. */
  153. void video_set_lut
  154. (unsigned int index, unsigned char r, unsigned char g, unsigned char b)
  155. {
  156. return;
  157. }
  158. #endif /* defined(CONFIG_VIDEO) || defined(CONFIG_CFB_CONSOLE) */